Amplifier



FIG. 1 is a front isometric view of an amplifier, showing my new design;

FIG. 2 is a front elevation view thereof.

FIG. 3 is a back elevation view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

Any broken lines shown in the drawings are for illustrative purposesonly and form no part of the claimed design.

The ornamental design for an amplifier, as shown and described.